#include "lvgl/lvgl.h"
#include "lvgl/demos/lv_demos.h"
#include "lv_drivers/display/fbdev.h"
#include "lv_drivers/indev/evdev.h"
#include <unistd.h>
#include <pthread.h>
#include <time.h>
#include <sys/time.h>

void obj_pos();
void obj_style();
void obj_transition();
static void event_cb(lv_event_t * e);
void btn_event1(void);
static void slider_event_cb1(lv_event_t * e);
void slider_event1(void);
void show_fixed_img(const lv_img_dsc_t *img);
void show_variable_img(char * file_name);